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PERKINS & COMSTOCK.

Horseshe Machne. A No. 64,903. Patented May 2. 867.

Wi77-NIESSES /VVENTORS.'

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CHARLES H. PERKNS AND RlCHARD W. GOMSTOCK, OF PROVIDENCE, RHODE ISLAND.

Letters Path/nf AVU. filllld, dated .lhrdy 21, i867y IMPROVED MACHINE POR SWAGING HQRSE-SHOE BLANKS.

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TO ALL WHOM IT MAY CONCERN:

Be it known that we, CHARLES H. PERKINS and Brennan W. Consrocli, both of' the city and county of Providence, inY the State of Rhode Island, have invented certain new and useful improvements in Machines for Bending Horse-Shoe Blanks and for thickening the ends of the same; and We do hereby declare that the following specication, taken in connection with thc drawings making a part of the same, is a full, clear, and exact description thereof.

Figure 1 is atop view.

Figure 2 is a side elevation,

In the accompanying drawings there is exhibited the means which constitute our invention for, first, thickening the ends of a bar of iron, and, second, for bending the same into the form of a horse-shoe, which operation, as weil as that of forming the creases for the nail-heads, it is usual to perform before the blank is linally hammered into the exact shape of shoe required.

The apparatus for thickening the ends of the blanks consists of a stationary bar of steel, A, firmly fixed to thc bed or platform B of the machine, and a vibrating swaging-bar of steel, C, working in connection therewith. The length of both those bars should be equal at least to the length of the blank of iron to forni the shoe. The vibrating swinging-bar C is made to vibrate on a point midway between its extremities by means of the levers D D, of equal length, whose fulcro are at a, underneath the platform of the bed, and whose upper ends enter mortises l b cnt in the bar. The lower ends of these levers are lininted respectively to the rods F F, which are worked by the eccentries G G upon the driving-shaft H, such eccentrics being set opposite to each other, so that by the rotation of the driving-shaft the swagingbar C 1'vill have the proper vibratory motion given to it, so that when a blank is placed between the edge of the stationary bar Azand the vibrating bar C, its ends which arc to form the heels will be swaged into the required shape. To accommodate blanks for different sizes of shoes We govern the distance of the swaging-bar from the stationary bar by means of an eccentric, c, the edge of which bears against the edge of the platform of the bed, and by turning such eccentric to any desired position the relative distances of the two bars apart can hc regulated. After the blank has been formed as described, the next operation is to bend it into the form of a. shoe. To effect this object we niche use 0f a movable pattern-block, I, in combination with the laterally moving bending-rollers J Jl. The patternblock projects from the end of a sliding hond, J2, which is connect-ed bymcans of a shackle-bar or other snitable means with the crank J3 upon the shaft K. This shaft obtains its motion from the gear-wheel K2 upon the driving-shaft, the teeth of which engage with the teeth of the large wheel L, keyed to shaft K. The bendingrollctwb J Jl are respectively fitted to turn upon axles which are xed upon the ends of the levers M -M. These levers are arranged beneath the platform of the bed and have their fulcro. at dd, the rollers being above the top surface of the platform and the axles upon which they turn being accommodated by suitable slots cut through the platform. The opposite ends of the levers M M are united by an elastic band or coiled spring, e, or are so arranged by the application of springs to them that the rollers J Jl will remain at their greatest distance apart until the levers are inlluencerl to bring them nearer to each other. The ends of thclevcrs M M,

opposite tothe rollers, are provided with stud-pinsff", which project through appropriate slots cut in the plat- Y,

form above the surface of the latter; and projecting from the sliding head J2, and ai right angles therewith, are bars with inclinedl planesgg, the surface of which, as the sliding head moves forward, will come into contact with the stud-pinsff".

lt is quite apparent from the foregoing that if a blank bo placed in front of the pattern-block and against the edges Vof the bending-rollers, the forward movement of the pattern-block will in the first instance cause the blank to be bent around the end of the block in the form of the letter U, but inasmuch as it is desiredvk that the form should bc more elliptical and correspond with the outline of the pattern-block, the rollers .l d* are made to approach cach other as the width of the pattern diminishes hy means of thc action of the inclined planes g g upon the levers M M, already explained, and cause the blank to conform precisely to the shape of the pattern. l

What we claim as our lnvention, and desire to secure by Letters Patent, is-

The combination of the vibrating raging-bar C, operated as described, with the stationary bar A, for

swaging the heels of horse-shoe blanks, substantially as described.

CHARLES H. PERKINS,

RICHARD W. COMSTOCK. Witnesses:

W. B. VINCENT, W. W. RICHARD. 

